An Optical Detection Method with Noise Suppression for Focal Panel Arrays

In practical engineering applications, due to the light reflection and scattering of the wireless channels with the suspended particles, such as the atmospheric channels or underwater channels, parts of the emitted optical signals will be reflected to the focal plane array of the space optical terminal. At the same time, due to the low isolation between the transmitting and receiving optical paths in the terminal, the reflected optical signal will interfere with the detection of the received optical signals from the far end, which seriously reduces the detection performance and the accuracy of the light spot centroid calculation. This paper proposes an increase-decrease statistical method for focal plane arrays, which can effectively eliminate the influence of the reflected optical signal and the noise on the signal detection. In addition, this increase-decrease statistical algorithm is simulated and verified by the two software co-simulation.